The first two books in the series will add more detail to the Frozen world and follow Anna and Elsa as they get to know each other better.

Barbara Marcus, children's division president at Random House, compared the upcoming titles to the Never Girls series, which is set in Peter Pan's Neverland.

"We have seen our Disney Never Girls series fill a real niche in the chapter book market, and with the momentum for Frozen only continuing to grow, we knew this was the perfect focus for this new series," she explained.